2  * LP5562 LED driver
20 #include <linux/platform_data/leds-lp55xx.h>
23 #include "leds-lp55xx-common.h"
117 static void lp5562_set_led_current(struct lp55xx_led *led, u8 led_current)  in lp5562_set_led_current()  argument
126 	led->led_current = led_current;  in lp5562_set_led_current()
127 	lp55xx_write(led->chip, addr[led->chan_nr], led_current);  in lp5562_set_led_current()
132 	enum lp55xx_engine_index idx = chip->engine_idx;  in lp5562_load_engine()
212 	enum lp55xx_engine_index idx = chip->engine_idx;  in lp5562_update_firmware()
213 	u8 pattern[LP5562_PROGRAM_LENGTH] = {0};  in lp5562_update_firmware()  local
232 	while ((offset < size - 1) && (i < LP5562_PROGRAM_LENGTH)) {  in lp5562_update_firmware()
242 		pattern[i] = (u8)cmd;  in lp5562_update_firmware()
253 		lp55xx_write(chip, addr[idx] + i, pattern[i]);  in lp5562_update_firmware()
258 	dev_err(&chip->cl->dev, "wrong pattern format\n");  in lp5562_update_firmware()
259 	return -EINVAL;  in lp5562_update_firmware()
264 	const struct firmware *fw = chip->fw;  in lp5562_firmware_loaded()
270 	if (fw->size > (LP5562_PROGRAM_LENGTH * 2)) {  in lp5562_firmware_loaded()
271 		dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n",  in lp5562_firmware_loaded()
272 			fw->size);  in lp5562_firmware_loaded()
283 	lp5562_update_firmware(chip, fw->data, fw->size);  in lp5562_firmware_loaded()
306 	/* Initialize all channels PWM to zero -> leds off */  in lp5562_post_init_device()
312 	/* Set LED map as register PWM by default */  in lp5562_post_init_device()
318 static int lp5562_led_brightness(struct lp55xx_led *led)  in lp5562_led_brightness()  argument
320 	struct lp55xx_chip *chip = led->chip;  in lp5562_led_brightness()
329 	mutex_lock(&chip->lock);  in lp5562_led_brightness()
330 	ret = lp55xx_write(chip, addr[led->chan_nr], led->brightness);  in lp5562_led_brightness()
331 	mutex_unlock(&chip->lock);  in lp5562_led_brightness()
354 	return ptn->size_r >= LP5562_PROGRAM_LENGTH ||  in _is_pc_overflow()
355 	       ptn->size_g >= LP5562_PROGRAM_LENGTH ||  in _is_pc_overflow()
356 	       ptn->size_b >= LP5562_PROGRAM_LENGTH;  in _is_pc_overflow()
369 	ptn = chip->pdata->patterns + (mode - 1);  in lp5562_run_predef_led_pattern()
371 		dev_err(&chip->cl->dev, "invalid pattern data\n");  in lp5562_run_predef_led_pattern()
372 		return -EINVAL;  in lp5562_run_predef_led_pattern()
377 	/* Set LED map as RGB */  in lp5562_run_predef_led_pattern()
382 		chip->engine_idx = i;  in lp5562_run_predef_led_pattern()
396 				ptn->r, ptn->size_r);  in lp5562_run_predef_led_pattern()
398 				ptn->g, ptn->size_g);  in lp5562_run_predef_led_pattern()
400 				ptn->b, ptn->size_b);  in lp5562_run_predef_led_pattern()
412 	struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));  in lp5562_store_pattern()  local
413 	struct lp55xx_chip *chip = led->chip;  in lp5562_store_pattern()
414 	struct lp55xx_predef_pattern *ptn = chip->pdata->patterns;  in lp5562_store_pattern()
415 	int num_patterns = chip->pdata->num_patterns;  in lp5562_store_pattern()
424 		return -EINVAL;  in lp5562_store_pattern()
426 	mutex_lock(&chip->lock);  in lp5562_store_pattern()
428 	mutex_unlock(&chip->lock);  in lp5562_store_pattern()
440 	struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));  in lp5562_store_engine_mux()  local
441 	struct lp55xx_chip *chip = led->chip;  in lp5562_store_engine_mux()
445 	/* LED map  in lp5562_store_engine_mux()
456 		enum lp55xx_engine_index idx = chip->engine_idx;  in lp5562_store_engine_mux()
470 			return -EINVAL;  in lp5562_store_engine_mux()
475 		return -EINVAL;  in lp5562_store_engine_mux()
478 	mutex_lock(&chip->lock);  in lp5562_store_engine_mux()
480 	mutex_unlock(&chip->lock);  in lp5562_store_engine_mux()
522 	struct lp55xx_led *led;  in lp5562_probe()  local
523 	struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);  in lp5562_probe()
524 	struct device_node *np = client->dev.of_node;  in lp5562_probe()
528 			pdata = lp55xx_of_populate_pdata(&client->dev, np);  in lp5562_probe()
532 			dev_err(&client->dev, "no platform data\n");  in lp5562_probe()
533 			return -EINVAL;  in lp5562_probe()
537 	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);  in lp5562_probe()
539 		return -ENOMEM;  in lp5562_probe()
541 	led = devm_kcalloc(&client->dev,  in lp5562_probe()
542 			pdata->num_channels, sizeof(*led), GFP_KERNEL);  in lp5562_probe()
543 	if (!led)  in lp5562_probe()
544 		return -ENOMEM;  in lp5562_probe()
546 	chip->cl = client;  in lp5562_probe()
547 	chip->pdata = pdata;  in lp5562_probe()
548 	chip->cfg = &lp5562_cfg;  in lp5562_probe()
550 	mutex_init(&chip->lock);  in lp5562_probe()
552 	i2c_set_clientdata(client, led);  in lp5562_probe()
558 	ret = lp55xx_register_leds(led, chip);  in lp5562_probe()
564 		dev_err(&client->dev, "registering sysfs failed\n");  in lp5562_probe()
571 	lp55xx_unregister_leds(led, chip);  in lp5562_probe()
580 	struct lp55xx_led *led = i2c_get_clientdata(client);  in lp5562_remove()  local
581 	struct lp55xx_chip *chip = led->chip;  in lp5562_remove()
586 	lp55xx_unregister_leds(led, chip);  in lp5562_remove()
619 MODULE_DESCRIPTION("Texas Instruments LP5562 LED Driver");